I think everyone else would conclude that Musk is welcome to have the Mars monopoly. There's nothing there you can't get on Earth without the hassle of climbin

I think everyone else would conclude that Musk is welcome to have the Mars monopoly. There's nothing there you can't get on Earth without the hassle of climbing out of a gravity well, schlepping across in front of a 24-hr supercharged X-ray machine, then climbing back down into another gravity well, then gathering whatever it is you felt is worth a hundred billion dollars of investment, waiting 2 years for the planets to align again, climbing back out of the gravity well you descended into, crossing the same X-ray moat, then finally returning to Earth and discovering some cheap bastard got it all from a mine in Australia.